近年來，高強度輕量化結構設計已成趨勢，仿生設計已廣泛運用於航太、軍事產業。積層製造技術（additive manufacturing，AM）具有可製造複雜晶格結構、自由度較高的優勢。豪豬的刺具有重量輕、高抗壓及抗彎曲的性質。本研究利用豪豬刺的構造作為仿生設計靈感，以Inventor軟體設計雙重蜂巢、蜂巢、蜂巢加肋條、雙柱體及空心柱體五款圓柱體結構，並以積層製造技術的熔融沈積成型（fused deposition modeling，FDM）製程搭配苯二甲酸乙二醇酯-1,4-環己二烯二亞甲基對苯二甲酸酯（polyethylene terephthalateco-1, 4-cylclohexylene，PETG）材質製作出實體外殼後，於外殼內部填充聚氨酯（polyurethane，PU）泡沫，並進行實際挫曲試驗，分析填充PU泡沫前後的抗挫曲強度及挫曲型態上的差異。研究結果顯示，柱體於填充PU泡沫後，可延遲挫曲的發生，並增加柱體結構的抗挫曲強度，其中以雙重蜂巢狀晶格結構最顯著。研究結果亦證明外殼於填充PU泡沫後，其抗挫曲強度數據變異較小，可靠度增加。
本研究另外搭配ANSYS進行有限元素分析 （finite element analysis，FEA）針對五款圓柱體結構外殼進行挫曲分析驗證，並與試驗值的挫曲強度進行比對確認，驗證結果數據接近且趨勢吻合。

In recent years, high strength and light structure have become a trend, and thus the biomimetic design has been widely used in aerospace and military industries. Additive manufacturing has advantages of making complex lattice structure and high flexibility of production. Porcupine quills have the characters of lightweight, high buckling, and bending strength. The aim of the study is to take porcupine quills as the bionic inspiration and further testing. Inventor® 3D CAD software is used to build five bionic cylindrical designs: auxetic honeycomb, honeycomb, honeycomb with ribs, double cylinder with ribs, and hollow cylinder. The five designs are produced with FDM of additive manufacturing and using PETG（poly ethylene terephthalateco-1, 4-cylclohexylene）as the shell material. The interior of the shells are filled with PU（polyurethane）foam, and the uniaxial buckling experiments are conducted to analyze the differences of buckling strength and buckling mode before and after filling with PU foam.
It is concluded that the onset of buckling can be delayed and the buckling strength can be increased after filling with PU foam, among which the auxetic honeycomb structure demonstrates the most significant difference. The research also shows that the reliability of the buckling experiment data performs better after the shells are filled with PU foam.
The finite element analysis（FEA）is conducted to verify the experiment result of the the five different shell designs, it is concluded that the experiment result is consistent with the FEA result.

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